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Pierre Mesnil
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Paris, FR
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Patents Grants
last 30 patents
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Patent Grant
Drill stem component comprising a movable coupler and a pressure ch...
Patent number
9,441,418
Issue date
Sep 13, 2016
VALLOUREC DRILLING PRODUCTS FRANCE
Beranger Mitjans
E21 - EARTH DRILLING MINING
Patents Applications
last 30 patents
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Patent Application
DRILL STEM COMPONENT COMPRISING A MOVABLE COUPLER AND A PRESSURE CH...
Publication number
20140034393
Publication date
Feb 6, 2014
VAM DRILLING FRANCE
Beranger Mitjans
E21 - EARTH DRILLING MINING